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drm/i915/crt: implement get_hw_state

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Note that even though this connector is cloneable we still can use the
exact same test to check whether the connector is on or whether the
encoder is enabled - both the dpms code and the encoder disable/enable
frob the exact same hw state.

For dvo/sdvo outputs, this will be different.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2012-07-02 13:41:21 +02:00
parent b1dc332c4d
commit e403fc941a
1 changed files with 23 additions and 0 deletions
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23
drivers/gpu/drm/i915/intel_crt.c
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@ -61,6 +61,27 @@ static struct intel_crt *intel_encoder_to_crt(struct intel_encoder *encoder)
return container_of(encoder, struct intel_crt, base);
}
static bool intel_crt_get_hw_state(struct intel_encoder *encoder,
enum pipe *pipe)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crt *crt = intel_encoder_to_crt(encoder);
u32 tmp;
tmp = I915_READ(crt->adpa_reg);
if (!(tmp & ADPA_DAC_ENABLE))
return false;
if (HAS_PCH_CPT(dev))
*pipe = PORT_TO_PIPE_CPT(tmp);
else
*pipe = PORT_TO_PIPE(tmp);
return true;
}
static void intel_disable_crt(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
@ -710,6 +731,8 @@ void intel_crt_init(struct drm_device *dev)
crt->base.disable = intel_disable_crt;
crt->base.enable = intel_enable_crt;
crt->base.get_hw_state = intel_crt_get_hw_state;
intel_connector->get_hw_state = intel_connector_get_hw_state;
drm_encoder_helper_add(&crt->base.base, &crt_encoder_funcs);
drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);